Jim Al-Khalili meets chemist and science showman Andrea Sella.
BBC World Service
Adam Walton pits a team of Glyndwr University experts against the Wrexham Pub Quiz League. (R)
BBC Radio Wales
Sarah Swadling investigates the benefits of getting a food product protected by the EU.
BBC Radio 4
Rachael Garside visits Blaeneinion, a quiet conservation project in 75 acres of mid Wales. (R)
BBC Somerset's weekly look at rural news, countryside issues, wildlife and local events.
An dùbhlan a chuir Cailean Seòras Moireasdan roimhe fhèin airson 2012. (R)
BBC Radio Nan Gaidheal
Part two of a series following the trail of Robert Louis Stevenson's Kidnapped. (R)
BBC Radio Scotland
Answering questions from everyday chemistry to quantum physics.
BBC Radio Cambridgeshire
How would you like to be remembered when it comes to your digital life?
Laurie Taylor explores the place of shopping in our lives and within sociological thought.
Why have we forgotten Fritz Haber?
Monday 7 January 2013